Between October 2010 and June 2018, 53 pts with ROS1-rearranged NSCLC were treated with crizotinib; median duration of treatment was 22 mo (95% confidence interval [CI]: 15, 36). At the time of data cutoff (June 30, 2018), 12 pts (22.6%) remained on treatment. A total of 26 deaths (49.1%) occurred over a median follow-up period of 63 mo. Median OS was 51 mo (95% CI: 29, not reached) and the probabilities of survival at 12, 24 and 48 mo were 78.8%, 67.0% and 50.7%, respectively. With a median treatment duration nearly 8 mo longer than that for the primary endpoint analysis and 30.2% of patients on treatment for more than 4 years, no new safety signals were noted. The most common grade 3 treatment-related adverse events (TRAEs; in ≥ 5% of pts) were hypophosphatemia (15.1%) and neutropenia (9.4%); no grade 4 TRAEs or treatment-related deaths were reported. With longer follow-up, there were no permanent discontinuations associated with TRAEs.

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Conclusions

The results of the OS analysis and updated safety information from PROFILE 1001 continue to support the favorable benefit/risk profile of crizotinib 250 mg BID for the treatment of patients with advanced ROS1-positive NSCLC.

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